Sistema de iluminación para obtención de imágenes optoacústicas basado en LEDs y EDU-CIAA

Emiliano Gasparovic, Roberto Mariano Insabella, Martín Germán González

Resumen


La obtención de imágenes optoacústicas es una técnica híbrida que se beneficia tanto del rico y versátil contraste óptico como de la alta resolución espacial asociada a la baja dispersión de propagación de las ondas ultrasónicas. Usualmente, se utilizan láseres de elevada energía (> 10 mJ) como fuente de luz los cuales son caros, no portátiles y tienen una baja tasa de repetición (~20 Hz). En los últimos años se ha estado investigando el uso de diodos emisores de luz (LEDs) como sustituto ya que son menos costosos, más confiables y compactos, y pueden proporcionar miles de pulsos en un segundo para obtener imágenes en tiempo real. En esta trabajo se presenta la implementación de un sistema de iluminación basado en LEDs y en el sistema embebido EDU-CIAA que es capaz de emitir pulsos de luz de corta duración (< 1 us), con gran intensidad y elevada frecuencia (> 1 kHz).

Palabras clave


optoacústica; LED; sistema embebido

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Referencias


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DOI: https://doi.org/10.37537/rev.elektron.4.2.107.2020

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